<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, height=device-height, initial-scale=1, user-scalable=no">
  <meta name="description" content="API docs for the addErrorListener method from the Isolate class, for the Dart programming language.">
  <title>addErrorListener method - Isolate class - dart:isolate library - Dart API</title>
  <!-- required because all the links are pseudo-absolute -->
  <base href="../..">

  <link href="https://fonts.googleapis.com/css?family=Source+Code+Pro:500,400i,400,300|Source+Sans+Pro:400,300,700" rel="stylesheet">
  <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
  <link rel="stylesheet" href="static-assets/github.css">
  <link rel="stylesheet" href="static-assets/styles.css">
  <link rel="icon" href="static-assets/favicon.png">
  
</head>

<body>

<div id="overlay-under-drawer"></div>

<header id="title">
  <button id="sidenav-left-toggle" type="button">&nbsp;</button>
  <ol class="breadcrumbs gt-separated dark hidden-xs">
    <li><a href="index.html">shake</a></li>
    <li><a href="dart-isolate/dart-isolate-library.html">dart:isolate</a></li>
    <li><a href="dart-isolate/Isolate-class.html">Isolate</a></li>
    <li class="self-crumb">addErrorListener method</li>
  </ol>
  <div class="self-name">addErrorListener</div>
  <form class="search navbar-right" role="search">
    <input type="text" id="search-box" autocomplete="off" disabled class="form-control typeahead" placeholder="Loading search...">
  </form>
</header>

<main>

  <div id="dartdoc-sidebar-left" class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
    <header id="header-search-sidebar" class="hidden-l">
      <form class="search-sidebar" role="search">
        <input type="text" id="search-sidebar" autocomplete="off" disabled class="form-control typeahead" placeholder="Loading search...">
      </form>
    </header>
    
    <ol class="breadcrumbs gt-separated dark hidden-l" id="sidebar-nav">
      <li><a href="index.html">shake</a></li>
      <li><a href="dart-isolate/dart-isolate-library.html">dart:isolate</a></li>
      <li><a href="dart-isolate/Isolate-class.html">Isolate</a></li>
      <li class="self-crumb">addErrorListener method</li>
    </ol>
    
    <h5>Isolate class</h5>
    <ol>
      <li class="section-title"><a href="dart-isolate/Isolate-class.html#constructors">Constructors</a></li>
      <li><a href="dart-isolate/Isolate/Isolate.html">Isolate</a></li>
    
      <li class="section-title">
        <a href="dart-isolate/Isolate-class.html#instance-properties">Properties</a>
      </li>
      <li><a href="dart-isolate/Isolate/controlPort.html">controlPort</a></li>
      <li><a href="dart-isolate/Isolate/errors.html">errors</a></li>
      <li><a href="dart-isolate/Isolate/pauseCapability.html">pauseCapability</a></li>
      <li><a href="dart-isolate/Isolate/terminateCapability.html">terminateCapability</a></li>
      <li class="inherited"><a href="dart-core/Object/hashCode.html">hashCode</a></li>
      <li class="inherited"><a href="dart-core/Object/runtimeType.html">runtimeType</a></li>
    
      <li class="section-title"><a href="dart-isolate/Isolate-class.html#instance-methods">Methods</a></li>
      <li><a href="dart-isolate/Isolate/addErrorListener.html">addErrorListener</a></li>
      <li><a href="dart-isolate/Isolate/addOnExitListener.html">addOnExitListener</a></li>
      <li><a href="dart-isolate/Isolate/kill.html">kill</a></li>
      <li><a href="dart-isolate/Isolate/pause.html">pause</a></li>
      <li><a href="dart-isolate/Isolate/ping.html">ping</a></li>
      <li><a href="dart-isolate/Isolate/removeErrorListener.html">removeErrorListener</a></li>
      <li><a href="dart-isolate/Isolate/removeOnExitListener.html">removeOnExitListener</a></li>
      <li><a href="dart-isolate/Isolate/resume.html">resume</a></li>
      <li><a href="dart-isolate/Isolate/setErrorsFatal.html">setErrorsFatal</a></li>
      <li class="inherited"><a href="dart-core/Object/noSuchMethod.html">noSuchMethod</a></li>
      <li class="inherited"><a href="dart-core/Object/toString.html">toString</a></li>
    
      <li class="section-title inherited"><a href="dart-isolate/Isolate-class.html#operators">Operators</a></li>
      <li class="inherited"><a href="dart-core/Object/operator_equals.html">operator ==</a></li>
    
      <li class="section-title"><a href="dart-isolate/Isolate-class.html#static-properties">Static properties</a></li>
      <li><a href="dart-isolate/Isolate/current.html">current</a></li>
      <li><a href="dart-isolate/Isolate/packageConfig.html">packageConfig</a></li>
      <li><a class="deprecated" href="dart-isolate/Isolate/packageRoot.html">packageRoot</a></li>
    
      <li class="section-title"><a href="dart-isolate/Isolate-class.html#static-methods">Static methods</a></li>
      <li><a href="dart-isolate/Isolate/resolvePackageUri.html">resolvePackageUri</a></li>
      <li><a href="dart-isolate/Isolate/spawn.html">spawn</a></li>
      <li><a href="dart-isolate/Isolate/spawnUri.html">spawnUri</a></li>
    
      <li class="section-title"><a href="dart-isolate/Isolate-class.html#constants">Constants</a></li>
      <li><a href="dart-isolate/Isolate/beforeNextEvent-constant.html">beforeNextEvent</a></li>
      <li><a href="dart-isolate/Isolate/immediate-constant.html">immediate</a></li>
    </ol>
  </div><!--/.sidebar-offcanvas-->

  <div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
      <div><h1>addErrorListener method</h1></div>

    <section class="multi-line-signature">
      <span class="returntype">void</span>
            <span class="name ">addErrorListener</span>
(<wbr><span class="parameter" id="addErrorListener-param-port"><span class="type-annotation"><a href="dart-isolate/SendPort-class.html">SendPort</a></span> <span class="parameter-name">port</span></span>)
      
    </section>
    <section class="desc markdown">
      <p>Requests that uncaught errors of the isolate are sent back to <code>port</code>.</p>
<p>The errors are sent back as two elements lists.
The first element is a <code>String</code> representation of the error, usually
created by calling <code>toString</code> on the error.
The second element is a <code>String</code> representation of an accompanying
stack trace, or <code>null</code> if no stack trace was provided.
To convert this back to a <a href="dart-core/StackTrace-class.html">StackTrace</a> object, use <a href="dart-core/StackTrace/StackTrace.fromString.html">StackTrace.fromString</a>.</p>
<p>Listening using the same port more than once does nothing.
A port will only receive each error once,
and will only need to be removed once using <a href="dart-isolate/Isolate/removeErrorListener.html">removeErrorListener</a>.</p>
<p>Closing the receive port that is associated with the port does not stop
the isolate from sending uncaught errors, they are just going to be lost.
Instead use <a href="dart-isolate/Isolate/removeErrorListener.html">removeErrorListener</a> to stop receiving errors on <code>port</code>.</p>
<p>Since isolates run concurrently, it's possible for it to exit before the
error listener is established. To avoid this, start the isolate paused,
add the listener and then resume the isolate.</p>
    </section>
    
    <section class="summary source-code" id="source">
      <h2><span>Implementation</span></h2>
      <pre class="language-dart"><code class="language-dart">external void addErrorListener(SendPort port);</code></pre>
    </section>

  </div> <!-- /.main-content -->

  <div id="dartdoc-sidebar-right" class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
  </div><!--/.sidebar-offcanvas-->

</main>

<footer>
  <span class="no-break">
    shake 0.1.0
  </span>

  
</footer>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="static-assets/typeahead.bundle.min.js"></script>
<script src="static-assets/highlight.pack.js"></script>
<script src="static-assets/URI.js"></script>
<script src="static-assets/script.js"></script>


</body>

</html>
